147 lines
5.2 KiB
Plaintext
147 lines
5.2 KiB
Plaintext
; --------------------------------------------------------------------------------
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; @Title: Example for flash declaration of NXP EM773 internal flash.
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;
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; @Description:
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; Script arguments:
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;
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; DO em773 [PREPAREONLY]
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;
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; PREPAREONLY only declares flash but does not execute flash programming
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;
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; Example:
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;
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; DO ~~/demo/arm/flash/em773 PREPAREONLY
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;
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; EM773 has 32 kByte internal flash and 8 kB internal SRAM.
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;
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; Code Read Protection (CRP):
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;
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; CRP is invoked by programming a specific pattern in flash location
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; at 0x000002FC.
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;
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; Name Pattern Description
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; --------------------------------
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; NO_ISP 0x4E697370 Prevents sampling of pin PIO0_1 for entering ISP mode.
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; PIO0_1 is available for other uses.
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; CRP1 0x12345678 Access to chip via the JTAG pins is disabled. This mode
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; allows partial flash update using the following ISP
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; commands and restrictions:
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; * Write to RAM command cannot access RAM below
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; 0x10000300.
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; * Copy RAM to flash command can not write to Sector 0.
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; * Erase command can erase Sector 0 only when all
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; sectors are selected for erase.
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; * Compare command is disabled.
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; * Read Memory command is disabled.
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; This mode is useful when CRP is required and flash
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; field updates are needed but all sectors can not be
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; erased.
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; CRP2 0x87654321 Access to chip via the JTAG pins is disabled. The
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; following ISP commands are disabled:
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; * Read Memory
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; * Write to RAM
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; * Go
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; * Copy RAM to flash
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; * Compare
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; When CRP2 is enabled the ISP erase command only allows
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; erasure of all user sectors.
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; CRP3 0x43218765 Access to chip via the JTAG pins is disabled. ISP entry
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; by pulling PIO0_1 LOW is disabled if a valid user code
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; is present in flash sector 0.
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; This mode effectively disables ISP override using
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; PIO0_1 pin.
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; It is up to the user's application to provide a flash
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; update mechanism using IAP calls or call reinvoke ISP
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; command to enable flash update via UART.
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; Caution: If CRP3 is selected, no future factory testing
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; can be performed on the device.
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;
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; RAM used by IAP command handler:
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;
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; Flash programming commands use the top 32 bytes of on-chip RAM. The maximum
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; stack usage in the user allocated stack space is 128 bytes and it grows
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; downwards.
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;
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; HINTS:
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;
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; Flash clock has to match System Clock Frequency (CCLK).
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; FLASH.CLocK.AUTO can be used for automatic flash clock measurement.
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;
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; Boot flash cannot be programmed or erased with builtin flash
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; algorithm.
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;
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; Data has to be loaded to flash alignment to page boundaries.
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;
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; Vector table checksum generation is done by script, so that it
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; can be used or switched off, as needed.
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;
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; @Author: WRD
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; @Copyright: (C) 1989-2022 Lauterbach GmbH, licensed for use with TRACE32(R) only
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; @Chip: EM773
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; --------------------------------------------------------------------------------
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; $Rev: 12049 $
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; $Id: em773.cmm 12049 2023-04-20 12:32:16Z bschroefel $
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LOCAL ¶meters
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ENTRY %LINE ¶meters
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LOCAL ¶m_prepareonly
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¶m_prepareonly=(STRing.SCAN(STRing.UPpeR("¶meters"),"PREPAREONLY",0)!=-1)
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; --------------------------------------------------------------------------------
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; Start debugging
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IF SYStem.MODE()<5
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(
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SYStem.RESet
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SYStem.CPU EM773
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SYStem.Option ResBreak OFF
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IF CABLE.TWOWIRE()
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(
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SYStem.CONFIG.DEBUGPORTTYPE SWD
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)
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ELSE
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(
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PRINT %ERROR "Serial Wire Debug (SWD) not supported by debug cable"
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ENDDO
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)
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SYStem.Up
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)
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; --------------------------------------------------------------------------------
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; Flash declaration
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FLASH.RESet
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FLASH.CLocK AUTO
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FLASH.Create 1. 0x00000000--0x00007fff 0x1000 TARGET Long
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FLASH.TARGET 0x10001200 0x10000000 0x1000 ~~/demo/arm/flash/long/lpc1100.bin
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; Flash script ends here if called with parameter PREPAREONLY
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IF ¶m_prepareonly
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ENDDO PREPAREDONE
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; --------------------------------------------------------------------------------
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; Flash programming example
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DIALOG.YESNO "Program flash memory?"
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LOCAL &progflash
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ENTRY &progflash
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IF &progflash
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(
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; Switch memory mapping to user flash mode, so that on-chip flash is
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; mapped to address 0x0--0x1ff. System Memory Remap register
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; SYSMEMREMAP:0..1 = 11b
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Data.Set 0x40048000 %Long 0x03
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; Example for download
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FLASH.ReProgram.ALL /Erase
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; 1. Download file
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Data.LOAD.auto *
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; 2. Checksum generation
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Data.SUM 0x0--0x1b /Long ;Calculate checksum of all (other) vectors
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Data.Set 0x1c %Long -Data.SUM() ;Write the 2's complement in reserved vector's spot
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; 3. Flash programming
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FLASH.ReProgram.off
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)
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ENDDO
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